Linked by Thom Holwerda on Fri 24th Feb 2012 21:59 UTC
Multimedia, AV An interesting anecdote at MinimalMac about television being broken. The author's young daughter, who is growing up in a Netflix/Hulu/iTunes/etc. household, was confronted with actual TV for the first time, and wonders why she can't pick what to watch, why the shows are being interrupted all the time, and so on. Clearly - TV is broken.
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RE[4]: DVD Quality
by galvanash on Sun 26th Feb 2012 16:17 UTC in reply to "RE[3]: DVD Quality"
galvanash
Member since:
2006-01-25

"Also, if you are preparing DVD material for display on a 1080p screen, transcoding it to 1080p resolution can improve the picture quality relative to the original DVD - it depends on the TV it will be displayed on.

The above is both a common misconception, and complete rubbish. There is no magic algorithm by which otherwise absent quality appears out of thin air. Some people fool themselves into believing what you've suggested, but as I've stated earlier the math always proves false.
"

If you play a 720x480 DVD back on a 1080p LCD/Plasma HDTV, it WILL be resized/upscaled to 1920x1080 whether you like it or not. Again, it is not about improving quality, it is about avoiding image degradation in the TV's scaling circuitry.

Your TV can do the scaling, or maybe you have an upconverting DVD player, in which case it will do the scaling - but something will be scaling the video - LCDs and Plasmas are fixed resolution devices.

If you TV has shitty scaling circuitry the quality of the image on your TV will be degraded badly ( blocking artifacts, tearing during scene changes, ringing, etc.). Transcoding the video prior to sending it to your TV using a a high quality interpolation routine (Lanczos4 or something similar) will improve the quality of the image on your TV, often dramatically. Yes, it does degrade the image relative to the source in a mathematical sense (badly at that), but on YOUR TV with shitty scaling circuitry it will look better.

In other words it is stupid to compare the quality of an 1080p transcode of a DVD to the original source material in a purely mathematical sense, because you never in fact get to see the original on an HDTV - it is always resized.

What you are comparing is the quality of a realtime scaling routine in the TV/DVD players circuitry to the scaling routine used during transcoding (which can be much more complex/accurate because it doesn't have to work in realtime). If you TV has bad scaling performance the transcode will almost certainly look better on your TV.

This is exactly what I said before, it is absolutely accurate, and I have no idea how you can claim otherwise.

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